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Remove dead calls to addFrameMove. 

Without a PROLOG_LABEL present, the cfi instructions are never printed.

llvm-svn: 182016
This commit is contained in:
Rafael Espindola 2013-05-16 15:08:37 +00:00
parent 5b38f744e8
commit 63d2e0ad9a
1 changed files with 0 additions and 25 deletions
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25
llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
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@ -76,17 +76,12 @@ void HexagonFrameLowering::determineFrameLayout(MachineFunction &MF) const {
void HexagonFrameLowering::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front();
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineModuleInfo &MMI = MF.getMMI();
MachineBasicBlock::iterator MBBI = MBB.begin();
const HexagonRegisterInfo *QRI =
static_cast<const HexagonRegisterInfo *>(MF.getTarget().getRegisterInfo());
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
determineFrameLayout(MF);
// Check if frame moves are needed for EH.
bool needsFrameMoves = MMI.hasDebugInfo() ||
!MF.getFunction()->needsUnwindTableEntry();
// Get the number of bytes to allocate from the FrameInfo.
int NumBytes = (int) MFI->getStackSize();
@ -113,26 +108,6 @@ void HexagonFrameLowering::emitPrologue(MachineFunction &MF) const {
MO.setImm(MFI->getMaxCallFrameSize());
}
if (needsFrameMoves) {
// Advance CFA. DW_CFA_def_cfa
unsigned FPReg = QRI->getFrameRegister();
unsigned RAReg = QRI->getRARegister();
MachineLocation Dst(MachineLocation::VirtualFP);
MachineLocation Src(FPReg, -8);
MMI.addFrameMove(0, Dst, Src);
// R31 = (R31 - #4)
MachineLocation LRDst(RAReg, -4);
MachineLocation LRSrc(RAReg);
MMI.addFrameMove(0, LRDst, LRSrc);
// R30 = (R30 - #8)
MachineLocation SPDst(FPReg, -8);
MachineLocation SPSrc(FPReg);
MMI.addFrameMove(0, SPDst, SPSrc);
}
//
// Only insert ALLOCFRAME if we need to.
//